Add one-click deploy script for /opt production setup with PM2.

Co-authored-by: Cursor <cursoragent@cursor.com>

ecosystem.config.js

@@ -1,14 +1,19 @@
 /**
  * PM2 进程守护配置
+ * 标准安装路径: /opt/Trading_Studio
  * 用法: pm2 start ecosystem.config.js
  */
+const path = require("path");
+
+const APP_DIR = __dirname;
+
 module.exports = {
   apps: [
     {
       name: "trading_studio",
-      script: "app.py",
-      interpreter: "./venv/bin/python",
-      cwd: __dirname,
+      script: path.join(APP_DIR, "app.py"),
+      interpreter: path.join(APP_DIR, "venv/bin/python"),
+      cwd: APP_DIR,
       instances: 1,
       autorestart: true,
       watch: false,
@@ -17,8 +22,8 @@ module.exports = {
         PYTHONUNBUFFERED: "1",
         CUDA_VISIBLE_DEVICES: "0",
       },
-      error_file: "./logs/pm2-error.log",
-      out_file: "./logs/pm2-out.log",
+      error_file: path.join(APP_DIR, "logs/pm2-error.log"),
+      out_file: path.join(APP_DIR, "logs/pm2-out.log"),
       log_date_format: "YYYY-MM-DD HH:mm:ss",
       merge_logs: true,
     },